Rctary wing aircraft propeller



April 18, 1933. c. R. OHNSORG 1,904,746

ROTARY WING AIRCRAFT PROPELLER Filed Nov. 23, 1929 Patented Apr. 18, 1933.

UNITED (STATES ROTARY WING imeaar'm man ra i Application filed November j-siaim, 469,214. l if The main object of this invention is to provide an air craft having wings which are adapted to rotate through means of a power plant located in the fuselage of the air craft.

tary wings and the directional rotary wing.

Figure 2 is a side elevational view of Figure 1.

Figure 8 is an enlarged perspective view of one of the rotating wings used with the air craft.

numeral 10 indicates the fuselage of an air craft, this fuselage is perfectly stream-lined and its rear end is provided "with a vertical rudder 11 and elevator rudders 12. To permit maneuvering 'over a terrain an undercarriage is provided which comprises struts 13 converging toward each other to which an axle 14 is attached, the axle being mounted upon wheels 15. Ere'cted upon the top of the fuselage is a motor housing 16 in which the power plant actuating the rotary wings, hereinafter mentioned, and the directional propeller is located; The power plant in the housing 16 rotates a shaft 17,

which a wing-like helical propeller 25a is mounted.

On the sides of the fuselage rectangularframes 18 and 19 are pivotally mounted.

These frames comprise parallel longitudinal members which are joined by connecting bars 20. The connecting bar of each of the frames lying adjacent the fuselage are provided withhubs 21, to which shaft 22, or the like, is

connected. This shaft is adapted to be used CHARLES R. omvsono; 0mm YORK, N JjY ASQJIGNQR or onn-imnrfmo osrn omvsone, or NEW YORKyN- Y. 101

Another object of the invention is to pro-.

- Referring in detail to the drawingthe having drum hubs 24a upon both ends of in conjunction withmeansfo'r rotating sa d shaft and thereby adjusting the positions ofthe frames 18 and l9. ltearward of-thei frames sustaining surfaces or rigid planes 23 um of the air craft while in flight.

Intermediate the length 1 of parallel bars are. provided toaid in retaining theequilibri- 557i forming the horizontal members 18 and 19 a I of the frames drums 2 1 are rotatably mounted on a shaft which is journaled in the longitudinal bars of theframe. These drums are adapted to house the engines which rotatesaid drums. The drums have projecting radially in a helical plane blades, orwings as indicatedby the numeral 25. Thehelical wings 25 are provided with an enlarged straight entering edge 27 from which thewidth ofthe wing gradually increases, the

maximum width being attained at a point 29 for intermediate the length of the wing',from f which maximum width the wing gradually tapers to a point, 28 olfsetata distance from the-surface of the drum 24:.

The air craftillustrated' in the accompany:

machine, which is equipped with rotatable ing drawing introduces a novel type of flying' sustaining surfaces used in conjunction with" auxiliary, rigid retaining surfaces. The propellers 26mounted on the shaft 17 of the f power plant in the housing 16 is adapted to give theaircraft horizontal,directional flight. r v V To attain elevation in a vertical planethe frames 18 and 19 are adjusted to a position 25 are set inmotion. To retain the desired altitude these rotating wings 25 must con shown in Figure 2, and the rotating wings stantly be kept in rotation and when-forward elevational and directional flight is desired theseframes 18'and 19 are adjusted to a forwardly, inclined position so that the axes of inclined position. j a

It is to be noted that certainchanges in form and construction maybe made without departing from the spirit and scope of the in-. vention, I claim: t f In an aircraft, means for propelling the i the drums 24 will also assume a forwardly,

same comprising a cylindrical drum adapted to be rotated, a helical annular Wing mounted on the surface of the drum, said Wing extend ing around said surface, the front edge of said wing, being substantially straight and extending a distance from the drum, the Width of said wing being increasingly greater rearward of said edge and attaining its maximum Width at a point intermediate said edge and the opposite end of the Wing, said Wing tapering to a point from the point of maximum Width, said tapered point lying beyond the surface of the drum, the edge of said Wing lying nearest said drum contacting with said surface the greater part of its length and departing from said surface at a point intermediate the length of the drum and continuing conyergently therefrom to said tapered point.

- n testimonywhereof I aflix my signature.

. CHARLES R. OHNSO RG. 

